Position the User and Eye Tracking System

  • Published on Oct 31, 2025
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Select the Tracking is ON/Tracking is OFF dropdown and select Pause. The dropdown will show Tracking is OFF. You are now ready to position the user and the Look module.

Positioning the eye tracking system in relation to the user is extremely important. The goal of positioning is to achieve a stable eye image for the Look eye tracking system to track. Because of this, you will probably need to try out different positions.

Look Eye Tracking System Parameters

The Look eye tracking system has an imaginary “eye box" that measures approximately 12 inches high by 14 inches wide x 14 inches deep. As long as the user’s eyes are within this area, they are in the view range of the system. Position the user between 18 inches and 32 inches from the Accent device screen. The optimal distance for most users is 22 to 26 inches. The optimal distance varies by user.

If the user moves in and out of the view area, the system will "remember" him or her. This means that once you set up the system you should not have to recalibrate it because of the user’s body movement.

The imaginary “eye box" dimensions are shown in relation to a user's head.

Imaginary Eye Box (or Gazing Area)

Positioning Guidelines

Meeting these positioning guidelines will help the user be successful with the Look eye tracking system.

  • Both eyes must be within the eye box; however, one eye will work.

  • The user should be approximately 22 to 26 inches from the Accent device’s screen.

  • The user’s nose should be aimed at the midpoint or upper two-thirds of the screen.

  • The user’s face should be parallel to the screen. If the user is tilted due to positioning or posture, the Accent device should be tilted at a similar angle.

  • There should be no obstructions between the user’s face and the Accent device and Look module.

Typically, a communication partner helps during the eye tracking setup process.

  • The communication partner can pause and resume eye tracking.

    Empower: Use a finger to touch the miniaturized positioning guide in the Multi-bar.

    NuVoice: Use a finger to touch the Track Status box.

  • The communication partner can select menu options by touching them on the screen with a finger.